Animated Madonna ANSI by MCL, circa 1989. Found by Noel Gamba, posted on giphy.
From an MZ-80 game by Hudson. Full video here.
SpankSCII by Lordnkon.
PETSCII wobble by James, @uniquename654.
Terminal Rain, a textmode game with a custom font, developed by Jackson Lango.
Hatsune Miku in 1000 layers of ASCII characters, by James Lyle. Full video here.
Tim Koch’s custom charset animations.
Improved wand effects in Stone Story RPG by Martian Rex.